Process for embossing porcelain, stone, and like material.



M. G. MALPAS.

PROCESS FOR EMBOSSING PORCELAIN, STONE, AND LlKE MATERIAL.

APPLICATION FILED JUNE 19, 1915 1,209,183. Patented Dec. 19,1916.

WITNESSES: L IA/I/E/VTOR g2 XX'LQAQ (Eb ym? Q5.

A TTOR/VE Y UNITED STATES A T OFFICE.

MARK GLOVER. 'mA'rlrAs, or monmsvrnnn, PENNSYLVANIA.

raocnss FOR nmnossrNe roRcE AIN, STONE, AND LIKE MATERIAL.

To all whom it may concern: 1 Be it known that I, M RK GLOVER MAL- resldent of Morrisville, Bucks and State of Pennsylvania, have invented a certain new and useful Process for Embossing Porcelain, Stone, and; like Ma -v .terlal, of which the following is a full, clear,

and exact specification.

This invention relates ,to a class of proc esses for producing embossed. designs on porcelain, stone, and like material. I

My invention has-for its object primarily to provide a process designed to be employed for facilitating the work of producing designs, figures, and characters in relief on the surface of porcelain, stone, and like material subject matter to be produced to the sur-- face of the material which. is. to be carved,

whereby signs, 1nsc'ript1ons, name-plates, and similar classes of .art maybe carved without requiring the employment of skilled workmanship as is incidentto the methods ordinarily in use. This is accomplished by I the process which consists mainly of removably applying one, or more pattern members of the characters, or designs of the and then forcing under air-pressure particles of a cutting substance in contact with the material so that the material surrounding the pattern will 'be cutaway,the said pattern member being resistible tothe cutting action of the substance. I r A further object of the invention is to provide a process which is susceptible of producing in a simple manner novel .and striking embossed color-effects especially on porcelain. g i 1 v vA'practical embodiment of the invention is represented in the accompanying drawing forming a part of this specification in which similar characte'rsof reference indicate corresponding p arts'in' all the views, the said invention being more fully de-' scribed hereinafter, and then pointed out in the claim at the end of the description.

In the drawing, Figure '1 is a perspective view of a block, or plate, or body of porcelain, or stone,- or like'material adapted to be embossed by the emplo ment of my rocess. Fig. 2 is a view 0 the block 0 the materialshowing a pattern member removably applied thereon as well as showing one form of means for carving the block by the use of particles of a cutting substance forced thereagainst under air-pressure. Fig. 3 is a PAS, a citizen of the United States," and a in the county of.

' 8 is a view showing a number Specification of Letters Patent. Patented Dec, 19, 1916, Application filed I' 19,1915]. 'Seria1No.85,143. v

- perspective view of 'the block when embo's'sed. Fig. 4 is aperspective view of one of the pattern members. Fig. 5 is a perspective view of a form of block adapted to be embossed, and having a colored layer thereon. Fig. 6 is a view of the block shown in Fig. 5 when undergoing the process of being embossed. Fig. 7 1s a perspective view of the block when embossed, and Fig.

members representing letters.

The process constituting my invention is of. the pattern thereagainst under pressure, though I prefer to form the pattern members 10 of rub- .ber which is especially adaptable for resisting the action of the cutting material owing toits resilient properties, it having been discovered that attern members of rubber tend to withstan soefficiently the action of the cutting 'material that practically. no wear is apparent even following repeated uses thereof.

To prepare a block, or slab, or plate, or body of stone, or porcelain, or other material, as 11, for being embossed, one, or more of the pattern members 10are disposed in a3 desired arrangementon the surface of the block, and the pattern members-are caused to be removably adhered thereto by the use of any adhesive substance, such as glue,

paste, and the like. A suitable portion of the block surroundingthe pattern members is" then subjected to the action of particles, or granules of sand, or pure silica, or fluorspar, or other substance, as- 12, of sufficient hard ness to freely cut the block, and this cutting? substance is forced against the surface of the block under air-pressure, or by any other force through the employment of an wenknown, or preferred type of pneumatic blowing apparatus, as 13, or other means. As the.

pattern members will serve to resist the action of the cutting substance the portions of 1. the block covered by the members will not 1 be affected by the cutting substance, and when the other portion of the block has been cut to a suitable depth so that the design, or

figure, or character extends suiiiciently in ,relief the pattern members are removed therefrom. In turn the design, or character will appear in accurately carved embossed form.

As illustrated in Figs. 5, 6, 7, my process may be advantageously employed to produce very durable, novel, and attractive signs, name-plates, etc., in color-combinations by embossing blocks, plates, or slabs especially of porcelain. This is accomplished by providing commonly known forms of blocks, or plates of porcelain made with a number of layers of difierent colors, such as white and blue, as 14- and 15. One, or a number of the pattern members 10 are suitably arranged on the exposed surface of the colored layer 15, or vice versa, as illustrated in Fig. (5, the pattern members being removably cemented thereon by the use of any adhesive substance. The part of the block, or plate of the porcelain surrounding the pattern members is then cut away by means of the'cutting substance being blown thereagainst by pneumatic pressure, as hereinbefore explained, and if desired a portion, or the entire layer, except the parts thereof which are covered by the pattern members, may be cut away. In this manner the embossed characters, or designs may be prov ,duced so as to appear in striking contrasted color-efiects on the body proper of the porcelain. Moreover, by the use of this process the work of embossing designs and characncomes ters on stone, or porcelain, and like material may be effectually accomplished with unusual facility, and without requiring a high order of skilled workmanship to be employed.

' In the foregoing description, I have embodied the preferred form of my invention, but I do not wish to be understood as limiting myself thereto, as I am aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve. to myself the right to make such changes as fairly fall within the scope thereof.

Having thus described my invention,

. exposed.

This specification signed and witnessed this fourteenth day of June, A. D. 1915.

MARK GLOVER Mamas.

Witnesses:

Lnwrs R. Bonn, EnMUNnMAsoN. 

